Annuals; not scapose; glabrous or pilose. Stems erect, unbranched or branched distally. Leaves basal and cauline; petiolate; basal not rosulate, blade margins pinnatifid or runcinate, lobes dentate or entire; cauline blade (base auriculate or amplexicaul), margins similar to basal. Racemes (corymbose), considerably elongated in fruit. Fruiting pedicels horizontal, stout. Flowers: sepals erect to ascending, oblong, lateral pair not saccate basally; petals white to lavender, (longer than sepals), spatulate, claw and blade obscurely differentiated; stamens tetradynamous; filaments dilated basally; anthers oblong; nectar glands: lateral annular, median glands confluent with lateral. Fruits sessile or shortly stipitate, linear, straight, terete; valves each with distinct midvein; replum rounded; septum complete, (deeply partitioned between seeds); ovules 78-120 per ovary; style distinct; stigma capitate, deeply 2-lobed. Seeds uniseriate, plump, not winged, ovoid; seed coat not mucilaginous when wetted; cotyledons incumbent.
|[Greek kilos (Latin coelus), hollow, and phragmos, partition, alluding to deep pits on sides of fruit septum where seeds are located]|